What is the climax of the book the night of the spadefoot toads?

In "The Night of the Spadefoot Toads," the climax occurs when the protagonist, a young boy named Sam, faces a critical moment during the night of the spadefoot toad migration. He must confront his fears and make a choice about whether to help save the toads from being crushed on the road or to follow his friends' lead. This pivotal decision highlights themes of courage, responsibility, and the importance of protecting nature, ultimately leading to a deeper understanding of his own values and the world around him.